package com.jiawen;

import com.jiawen.service.impl.HelloServerInitializer;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;

public class HelloServer {
    public static void main(String[] args) throws Exception {
        // 定义一对线程组
        // 主线程组, 用于接受客户端的连接,但是不做任何处理,跟老板一样,不做事
        EventLoopGroup bossGroup = new NioEventLoopGroup();
        // 从线程组, 老板线程组会把任务丢给他,让手下线程组去做任务
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        try {
            // netty服务器的创建, ServerBootstrap 是一个启动类
            ServerBootstrap serverBootstrap = new ServerBootstrap();
            // 设置主从线程组
            serverBootstrap.group(bossGroup, workerGroup)
                    // 设置nio的双向通道
                    .channel(NioServerSocketChannel.class)
                    // 子处理器,用于处理workerGroup
                    .childHandler(new HelloServerInitializer());

            // 启动server,并且设置8088为启动的端口号,同时启动方式为同步
            ChannelFuture channelFuture = serverBootstrap.bind(8088).sync();
            System.out.println("启动后浏览器访问 http://localhost:8088/");
            // 监听关闭的channel,设置位同步方式
            channelFuture.channel().closeFuture().sync();
        } finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }

    }
}